Pacific ESI - Biomechanics


ESI provides numerical models of the human body, which can complete the simulation tools used in different fields. Baseline models allow you to perform realistic global simulation of the biomechanical response and to do parametric studies. Refined models give access to the local behavior, which is difficult or impossible to analyze with experimental tests.

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Thanks to sophisticated and adapted tools, you can now effectively produce prototypes of the biomechanical system and transcribe all the relevant physical conditions into its virtual substitute.

ESI offers two virtual families of human models: H-Model for industrial use and ROBBY for academical use. The families consist in 50th and 95th percentile male, 5th percentile female and child models. ESI also offers versions of the European Union supported HUMOS models.

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H-Model Family

The baseline models are "Human Articulated Rigid Body" (HARB) models, where a rigid outer skin around an articulated rigid bone skeleton represents the body segments, connected to each other by various non-linear joint types. Soft contact models establish realistic interaction of the outer skin with the environment. The baseline models serve to capture the overall kinematics and kinetics of the human body in the studied events.

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ROBBY Family

Refined and truly deformable finite element models are available for the head, neck, thorax, upper extremities and shoulder, abdomen, pelvis, lower extremities and ankle /foot parts, including a fully articulated spine, internal organs and active and passive muscle bars. The modular refined models can be substituted into the corresponding HARB baseline models for zooming in on the detailed behaviour of selected body parts.